Analog Front-End for EMG Acquisition System

被引:0
|
作者
Chung, Bum-Sik [1 ]
Kim, Hyeong-Kyu [1 ]
Cho, Kang-Il [1 ]
Kim, Ho-Jin [1 ]
Ahn, Gil-Cho [1 ]
机构
[1] Sogang Univ, Dept Elect Engn, 35 Baekbeom Ro, Seoul 121742, South Korea
关键词
Analog front-end (AFE); Electromyogram (EMG); Instrumentation amplifier (IA); Chopper stabilization; Incremental analog-to-digital converter (IADC);
D O I
暂无
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
This paper presents a 4-channel analog front-end (AFE) for Electromyogram (EMG) acquisition systems. Each input channel consists of a chopper-stabilized instrumentation amplifier (IA) and a low-pass filer (LPF). A 15-bit analog-to-digital converter (ADC) with a buffer amplifier is shared with four input channels through multiplexer. An incremental ADC with a 1.5-bit second-order feed-forward topology is employed to achieve 15-bit resolution. The prototype AFE is fabricated in a 0.18 mu m CMOS process with an active die area of 1.5 mm(2). It achieves 3.2 mu Vrms input referred noise with a gain of 40 dB and a cutoff frequency of 500 Hz for LPF while consuming 3.713 mW from a 1.8V supply.
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页码:57 / 58
页数:2
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